Vacuum valve ejector



Patented Jan. 2e, 1932 1,842,500

UNITED s'rfiviiasv PATENT oFFic HERBERT G. BEDE, F PAWT'UCKET, RHODE ISLAND VACUUM VALVE moron Application leal January Il?, 1929. Serial No. 333,054.

This invention relates to an ejector adapted embodying the various features of my invento be used in connection with garment steamtion.

ing and pressing machines and in other rela- Figure 2vis a vertical sectional view of the tions where a device of this character might same taken in the plane of line 2-2, Figure l. 5 be useful for withdrawing steam and mois- As illustrated, this device comprises a 50 ture from the garment and from the added valve case or shell -1- having a pressure pressing elements immediately following the chamber -Qf-, a suction chamber 3- and pressing and shaping operat-ions. an intermediate chamber 4- which is pref- 'lhe main object of devices of this charerably located between the chambers `2 io acter is to render the operations of shaping, and -3 and is connected to the chamber 55 pressing and drying' the garments more eX- -2- by means of a port 5-. peditious and less laborious and thereby to The chamber 2 forms a partof what may increase the output for a given period of time be called the induction passage of the ejector and incidentally to prolong the life of the and is provided with an inlet 6 adapted to be l "l5 pads commonly used on the pressing elements connected by a pipe -7- to any available 60 of garment pressing machines. source of steam or other Huid supply under l am aware that various devices have herepressure. totore been proposed for carrying out this The chamber -4- constitutes a part of main object in which the passage of the steam Whatmay be termed the eduction passage of or other Huid under pressure through the the ejector and is provided with a discharge e5 ejector has been controlled by external means 1102218 -8- projecting from one side of said separate 'from the ejector per se while the ob- Chamber aCIOSS the Suction chamber ject 0f the present invention is t0 incorpo- -3 for directlng the pressure fluid through rate the controlling means Within the ejector the Outlet 0f ,the SUCOII Chamber -3- and as a part thereof S0 that boi-,h may be made as thereby creating more or less suction-in said 70 a unitary article of manufacture capable of Chambelbeing easily and quickly installed in the The Chamber -3 1S PI'OVlded With an insteamdistributing system of any garment 19t 9* adapted t0 be C Onncted by a P1P@ pressing machine or other apparatus with 10 t0 the Steam'dlst'lbutlng Chamber 01* "0 which the device might be useful. Chambers of a garmenp pressing machme 0I' 75 Another Object is to provide Simple and other apparatus for withdrawing steam and" eli'icient means for reducing to a minimum gllglsltlsefgl rllasl the PadS 00m' tritateinstaurata ont? The chamber@- @nd Salts of the Controling nlean p g erably arranged in coaxially spaced relation 80 A further object is to bring all of the parts l relptgh jearltnnilgnogt im() Compact 'elatiol S0 that the device may side of the partition adjacent the chamber be installed in Ielllvely Small Space Within 2 being provided Wjth'avalve Seat -11 40 or upon the machine with which it is used. surrounding the port -5-.r1 85 Other Objects and uses relating t0 Specific The induction 0r pressure chamber 2 parts of the ejector will be brought out in also serves as a valve chamber for receiving the followingl description. a self-closing valve l2- which is normally ln the drawings: spring pressed against the seat -11- by a Figure 1 is a side elevation of an ejector 4coiled'spring -13-. l 90 The inner end of the valve is provided with a guide stem 14.- slidable endwise in the port -5- and preferably slabbed in cross section to permit the passage of the pressure fluid through the port when the valve is open, said valve stem consisting, in this instance, of the head of a bolt or screw in threaded engagement with the body of the valve for holding the inner end packing of lthe valve in operative position.

The outer end of the chamber 2'- is pro vided with an opening -1'5- of sufficiently large' diameter to permit the valve -12- to be withdrawn and replacedendwise therethrough, said opening being normally closed by a bushing -16- in threaded engagement with the internally threaded walls of the ad-. jacent end of the shell -1- and provided with a central socket -17- for receiving the adjacent reduced end of the valve -12- and thereby additionally guiding the valve in its endwise reciprocal movements.

The spring -13- for holding the -valve against its seat vsurrounds the outer end of the valve and has its inner end engaged with the head of said' valve'and its outer end enscrewed or otherwise secured in a radial opengaged with the bushing 16-.

The intermediate chamber AJ- is substantially coaxial with the. chamber -2-, valve 12- and port -5- at the inner end therel of so that when the valve is opened the Huid under pressure entering the chamber -2- through the induction port is instantly discharged into the chamber -4- and thence through the discharge nozzle -8- which is ing in one side of the chamber -4.

The main portion of the suction chamber -B-is located at the same side of the chambers -2- and 4- as the-nozzle -8- to extend entirely around said nozzle and is provided with a branch chamber -3- extending from the main portion of the chamber across the produced axis of the valve port '--5 at the outerend of the chamber 4- and in spaced relation thereto.-

The branch chamber -3- is separated Vfrom the chamber '4-by.an intervening partition -.-18- which forms the outer end wall of the chamber -4 and inner end wall 4of the chamber -3-. e

The nozzle -8- is preferably made separate from the valve case for convenience of manufactureand replacements and is proprovided with an threaded opening 2lin alinement with the nozzle -8- in which is secured the adjacent threaded end of the delivery conduit 22- having a central lengthwise opening -22- through which the pressure fluid is discharged from the nozzle -8-.

The outer end of the delivery conduit -22- is adapted to be connected by a pipe -23- to any suitable waste pipe for conductingthe steam and moisture laden air away from the machine and forms a common outlet for both chambers 3 and 4.

It isV evident, however, thatthe steam and moisture discharged through the opening -21- may be utilized for heating purposes or reused for moistening purposes, if desired.

As previously stated, the suction chamber -3- may be connected bythe pipe '10- or equivalent connections with the steam distributing chamber of a garment pressing machine for withdrawing steam and moisture therefrom to eifect a quick drying of the .garment and pads immediately following the steamin and pressingoperations or the same suction orce may be used `for other purposes without departing from the spirit o this invention.

l Val/ve opening means The inner and outer end walls of the branch suction chamber -3- are provided with registering openings -24=- and -25 coaxial with the axis of the Valve 12 and port 5 for receiving a tubular bushing or gland 26 which is passed through and tightly litted within the openings -24- and -25 across the branch chamber -3- so that its inner end may project into the intermediate chamber 4- thereby exposing the inner end of the gland to Huid pressure within the chamber -4- when the valve 12- is open.

The inner end of the gland 26 and walls of the opening 24 in the-partition 18 are thread ed and engaged with each other for holding the gland in operative position, the outer end of said gland being enlarged and engaged with the outer face of the adjacent portion of the valve case to limit its inward movement.

A valve operating member, consisting in this instance of a push rod 27, is reciprocally slidable in the central opening in the gland 26 and extends beyond the opposite ends thereof with its inner end engaged with the guide stem 14 of the valve and its outer end projecting beyond the corresponding end ofthe gland 26.

The valve operating rod 27 may be moved inwardly at will for opening .the valve 12 against the action of the spring 13 but is`nor mally held in its outermost position, as shown in 4Figure 2 by the force of said spring.

The inner movement of the rod 27 may be effected by any desired manually operated means consisting, in this instance, of a lever -28 which is pivoted at 29 to the outer portion of the valve case -1 and has one end -28- adapted toengage the outer end of the push rod 27 and its other end adapted to be connected to any suitable operating mechanism, not shown.

The push rod 27 is fitted as closely as possible within the gland 27 to reduce leakage of the pressureiiuid through the gland when the valve 12 is open, but must, of course, move freely in the gland, and suitable means is, therefore; provided for preventing the escape of the pressure VHuid through the gland.

F or this latter purpose the portions of the gland -26- registering with the branch sucf tion chamber -;8 is provided with one or more radial openings --30- therethrough for connecting the interior ofthe gland with said suction chamber whereby any steam or other pressure'y :Huid which may tend to pass into the gland from the chamber 4 when the valve is opened would be instantly drawnl through the openings -30- and into the suction chamber -3- to be discharged through outlet conduit -22-`with the steam or other Huid passing through the nozzle 8-.

As a further means :for preventin the es cape of the pressure iuid through t e gland the outer ends of the central opening in the gland and push rod 20 are made of somewhat greater diameter'than their inner ends while the intermediate portions of the same partsv are tapered for engagement with each other when the push rod is operated to open the valve. It will also be noted that when the push rod 27 is forced outwardly by the closing of the valve 12,` the passages 30 will instantly be opened to break the vacuum in the chamber 3. l

That is, the tapered portion 31- of the inner wall of the gland -26- extends beyond opposite ends of the openings 30- while the intermediate portion of the periphery ot' the push rod 27 is tapered at 32 to correspond with the taper 31.

The tapered portions 32 of the push rod 27 is provided intermediate its ends with an annular groove 33 adapted to register with the openings 30 when the push rod is forced in wardly in the act of opening the valve 12.

r.lhe tapered portion 32 of the push rod 27 is normally positioned at the outer end of 'the openings 30- or out of registration with the tapered portion 31 of the gland 26.

When the push rod is forced inwardly for opening the valve 12 the tapered portion 32 will engage the tapered portion 31 of the gland to close the opening through the gland against the leakage of steam or other pressure fluid therethrough and at the same time the annular groove 33 will be brought into registration with the openings 30 to allow any pressure steam which may enter the gland to be withdrawn by suction from the interior of the gland and discharged through the outlet conduit 22 by the force of the stem passing through the nozzle 8.

The tapered portion 32 on the push rod 27 constitutes what may be termed a supplemental valve cooperating with the .tapered seat 31 to prevent leakage of the pressure `iiuid through the gland when the push rod is operated to open the valve but in case any pressure steam should enter the gland while the push rod is being operated to open the valve 12 it would be instantly withdrawn from the gland into the suction chamber 3 and discharged into the outlet 22 by the force of the steam and other pressure Huid passing through the nozzle 8.

Operation Assuming that the chamber 2 contains steam or other fluid under pressure and that it is desired to produce suction in the chamber 3 for withdrawing steam and moisture from the garment and pads of the pressing machine through the pipe 1() 4it is simply necessary to operate the lever 28 to force the rod 27 inwardly and thereby to open the valve against the action of the spring 13 during which operation the supplemental valve 32 would be brought into engagement with its seat 31 to close the opening through the gland 26 and at the same time to register the annular groove 33 with the openings 30. l

This\opening of the valve 12 will allow the pressure fluid to pass from the chamber order to facilitate the exhaust of the steam from the chamber 3 the inner and outer ends of the passage 22 through the conduit 22 are made more or less Haring while the intermediate portion preferably adjacent the discharge end of the nozzle 8 issomewhat restricted as shown in Figure 2.

The construction shown and described is particularly efcient in carrying out the objects stated, but it is obvious that various changes may be made in the detail construction thereof without departing from the spirit of the invention.

.What I claim is:

1. A fluid-operated ejector having a valve in its pressure side controlling the passage of fluid therethrough, a gland communicating with the suction side of the ejector, and a valve-opening member movable in the gland and provided with a supplemental valve cooperating therewith for closing the gland when the first-named valve is opened.

2. A fluid-operated ejector comprising a.

.in the other chamber, said shell having a gland communicating with the suction chamber, a self-closing valve within theshell for controlling the passage of the pressure fluid through the shell, and a valve-operating member movable at will in said gland for opening said valve and provided with means cooperating with the gland for closing-said gland when operated to open the valve.

3. A uid-operated ejector comprising a shell having separate chambers provided with a common outlet, means for directing fluid under pressure through one of said chambers to the outlet for creating suction in the other chamber, a self-closing valve within one ofthe chambers for controlling the passage of the pressure fluid through the shell to the outlet, a gland member secured in registering openings in the shell and provided' with an internal tapered seat communicating with the suction chamber, and a push-rod movable in the gland member for opening the valve and provided with a. tapered -peripherai portion for 'engagingr said seat when the push-rod is operated to open the valve.

ft. A fluid-operated ejector comprisin a shell having separate chambers provied with a common outlet, means'for directing luid under pressure through one of said chambers to the outlet for creating suction in the other chamber, a self-closing valve within one of the chambers for controlling the passage of the pressure fluid through the shell to the outlet, a gland member secured in registering openings in the shell and'provided with an internal tapered seat and an opening leading therefrom to the suction chamber, and a push-rod movable in said gland member for opening the valve and provided with a tapered supplemental valve for engaging said seat\when the push-rod is operated to open the rst-named valve, said tapered valve having an annular groove movable into and out of registration with the opening in the gland member as the pushrod is moved to and from its valve-opening position.

' 5. A Huid-ejector having a valve controlling communication between the induction and eduction passages, a valve-operating member, and a gland therefor having a portion thereof exposed to the pressure fluid and another portion thereof communicating with the suction side of the ejector to cause any uid which may pass into the gland to be withdrawn therefrom by the suction in said chamber.

6. A fluid-ejector having a' self-closing valve controlling -the passage of'fthe pres'- for the push-rod having its interior communieating with the suction side of the ejector, said push-rod having means cooperating with a portion of the land for closing the opening through the g and lwhen operated to open the valve.

In witness whereof I have hereunto set my hand this 27th da5r of December, 1928.

HERBERT G. BEEDE. 

